Dissomphalus strabus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74 : 52-53

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https://doi.org/ 10.11646/zootaxa.338.1.1

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Dissomphalus strabus

sp. nov.

Dissomphalus strabus sp. nov. ( Figs. 100–103 View FIGURES 100–117 )

Description. — Male. Body length 3.00 mm; LFW 2.75 mm. Color: body and clypeus black; metasoma, clypeus and antenna dark castaneous, scape lighter; mandible, antenna, palpi and legs light castaneous; wings subhyaline.

Head: mandible bidentate. Clypeus tridentate, median carina high and straight in profile. First four antennal segments in a ratio of 16:8:8:7, segment XI 1.8 X as long as broad. Frons somewhat strongly coriaceous, punctures inconspicuous. Eyes bulging with sparse long hairs. LH 0.98 X WH; WF 0.6 X WH; 1.38 X HE; OOL 1.2 X WOT; DAO 0.35 X WOT; posterior ocelli distant from the vertex crest 1.0 X DAO, frontal angle of ocellar triangle acute. Vertex near straight, corners rounded. VOL 0.59 X HE.

Mesosoma: thorax less coriaceous as frons. Pronotal disc 0.39 X length of mesoscutum. Propodeal disc 0.8 X as long as wide, with polished area posteriorly. Fore femur 3.1 X as long as thick.

Metasoma: tergite II with pair of rounded and shallow depression, distant each other 0.6 X their diameter, touching the posterior margin of tergite I, each depression with pit with high rim and tuft of hairs, both slightly directed each other, space between the depression slightly flattened ( Fig. 100 View FIGURES 100–117 ). Hypopygium with posterior margin straight. Genitalia ( Figs. 101–102 View FIGURES 100–117 ): paramere wide, apex slightly directed inward, dorsal margin slightly convex, ventral margin slightly concave; volsella with cuspis with apex truncate; aedeagus with ventral ramus shorter than dorsal body, laminar, surface horizontal, each apex with two rami, the inner ramus membranous, wide with apical margin inclined and straight, inner corner sharpened, outer ramus thin with rounded apex; dorsal body with two pairs of apical lobes ( Fig. 103 View FIGURES 100–117 ), the outer thin with apex sharpened strongly angled downward, inner margin with large and triangular basal expansion, inner pair longer than outer pair, membranous, stout and hairy; apodeme extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male, PANAMA, Fortuna, Cont. Chiriqui, B. Toro, 1070–1090m, 8–11.IV.1999, Malaise trap, R. Cambra & A. Santos col. ( MUIP) . PARATYPES: PANAMA, 5 males, same data as holotype ( MUIP) .

Variation. — Median carina of clypeus not so high, depression of metasomal tergite II deeper, pits more directed each other.

Comments. — Fore wings nearly as long as the body.

Etymology. — The specific epithet refers to tergal processes directed inward.